Evelyn,
Can you tell me what country you took the exam, hence the exam was tested in the US and there were no problems with the drag-n-drops then.
You'll forgive me for saying so, but you're dead wrong here. I took it in the United States - at center MD47 in Baltimore, MD - and had the problem. I realize that it is obviously in part due to the older computers at some centers, as MD47 seems to be using older machines with 64Mb of memory and Windows95, but to characterize this as a problem only outside the US is unfair.
I'll be happy to give you my testing information, etc, as confirmation if you'd like. I did note in the comments on my exam that I was having problems doing the drag and drops due to resource allocation problems on the PC.